Abstract: Objective: To verify the accuracy of wearable wrist blood pressure monitoring watch (hereinafter referred to as wearable wrist watch) based on photoelectric principle in blood pressure monitoring of hospitalized patients with acute stroke. Methods: Diagnostic test evaluation study design was used. By using convenient sampling method, the neurology patients with acute stroke of a tertiary grade A hospital from September to December 2021 were selected as the research participants, and at the same time, the wearable wrist watches and bedside ECG monitor instrument were used to collect blood pressure values. Blood pressure data measured at bedside ECG monitor was used as the gold standard to compare the wearable wrist watches the accuracy of blood pressure monitoring. Results: A total of 35 patients with acute stroke were enrolled, and 414 groups of blood pressure values were measured. The SBP kappa value measured by wearable wrist watch and bedside ECG monitor was 0.768, with 89.1% sensitivity and 87.7% specificity. The kappa value of diastolic blood pressure (DBP) was 0.648, the sensitivity was 94.6%, and the specificity was 67.9%. There was no significant difference in SBP and DBP measured by the two methods (P>0.05). Conclusion: Wearable wrist watch measuring blood pressure in patients with acute stroke in the hospital has a good accuracy, and can be used in the acute stroke patients ambulatory blood pressure monitoring.

Key words: acute stroke; wearable devices; blood pressure monitoring